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Updated Bisecting a Regression (markdown)

Tim van der Meij 2015-08-04 22:04:28 +02:00
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Bisecting-a-Regression.md

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## 1) At a minimum you will need:
- Git
- Node.js
At a minimum you will need Git and Node.js.
## 2) Getting PDF.js
- Start the git command line
## Getting PDF.js
- Start the Git command line
- Change to a directory where you want to place PDF.js
- Run `git clone git://github.com/mozilla/pdf.js.git`
## 3) Open PDF.js
## Open PDF.js
### Option 1 - Node.js server
- Run `cd pdf.js`
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### Option 2 - Another server
- Open a browser and go to `http://<yourserver>/pdf.js/web/viewer.html`
## 4) Verify the regression
- Download the bad PDF and open it with the above viewer (using, for example, the Open File button in the toolbar) and verify that the PDF is broken
## Verify the regression
- Download the bad PDF and open it with the above viewer (using, for example, the Open File button in the toolbar) and verify that the PDF is broken.
## 5) Start the bisecting process
- Mark the current version as bad using `git bisect start` and `git bisect bad`
## Start the bisecting process
- Mark the current version as bad using `git bisect start` and `git bisect bad`.
## 6) Find bad commit ID
## Find bad commit ID
### Option 1 - Detecting version / commit of PDF.js installed in Firefox
- Open `resource://pdf.js/build/pdf.js`
@ -40,13 +38,13 @@ Aurora: http://mxr.mozilla.org/mozilla-aurora/source/browser/extensions/pdfjs/co
Beta: http://mxr.mozilla.org/mozilla-beta/source/browser/extensions/pdfjs/content/build/pdf.js#25
## 7) Verify the working version
## Verify the working version
- `git checkout <commit ID that you found above>`
- Full refresh (CTRL + Shift + R) Firefox and verify that the PDF no longer works
- Mark it as good `git bisect good`
- Full refresh (CTRL + Shift + R) Firefox and verify that the PDF is no longer broken
- Mark it as good with `git bisect good`
## 8) Continue bisecting
## Continue bisecting
- Full refresh (CTRL + Shift + R) of the viewer in Firefox
- If the current version works, mark it using `git bisect good`
- If it fails, mark it using `git bisect bad`
- Repeat the steps above
- If the current version does not work, mark it using `git bisect bad`
- Repeat the steps above until it converges to a single commit